Gas burner



R. THURM GAS BURNER Oct. 21 1930.

Original Filed Oct. 15 1925 A r ram/ Y5 I Patented Oct. 21, 1930 UNITED STATES PATIENT orrlcr.

310mm) THURM, or saen'mw, MICHIGAN, ASSIGNOR To .1mm rnnxnvs comm, 'moonronerma, or saemaw, mcnronn, A conronarron or new YORK M ens BURNER Original application illed October 15, 1925, Serial No. 82,511. Divided and this application January '81, 1928. Serial No. 250,848.

The present invention relates to burners for illuminating gas, producer gas, water gas, vaporized oils and similar fuels and particularly to the long tubular burners employed for burning mixtures of gaseous fuels and air in substantially oxygen-free atmospheres as, for example, in baking ovens. .When the ordinarily long tubular burner supplied with a combustible mixture of air and gaseous fuel is employed in a more or less confined space and in an atmosphere that is substantially free from or at leastdefici'ent in oxygen and raised to a high temperature the combustion of the fuel at the outlet points of the burner is not dependable and there is liability to objectionable and somewhat dangerous backfiring and explosions.

An object of the present mventlon is to provide a burner of the above mentioned type so constructed as to prevent such backfiring and explosions and to lnsure a continuous and substantially uniform combustion throughout the length of the burner.

With these and other objects in view, the invention comprises the novel and improved features, constructions and combination of parts hereinafter described, and partlcularly pointed out in the claims, theadvantages of which will be clearly understood and appreciated by. those skilled in the art.

As to common patentable subject matter this application is a divisional application based upon certain subject matter contained in my prior application, Serial No. 62,511, filed October 15, 1925.

The invention will be clearly understood from the accompanying drawings illustrating the invention in its preferred form and the following description of the construction therein shown. I

In the drawings Figure 1 is a, view in side elevation of a burner embodying parts of a baking oven which aid in supporting the burner shown in section; v

4 Figure 2 is a sectional view taken on the line 22 of Figure 1;

Figure 3 is a fragmentary top plan view of the burner on an enlarged scale;

illerl Figure 4 is a-detailed sectional view of a portion of the burner; and v v Figure 5 is a view partly in plan and partly in horizontal section of the portion of the throughout the length of the burner. F 11c] in the form of properly mixed gas and air is supplied to the conduit by a suitable mixing device with which it is connected and which in turn is supplied with gas and air in the proper proportions. From the fuel chamber the fuel is discharged and is burned at the point of discharge.

In the illustrated embodiment the burner includes a tubular member preferably circu lar in cross-sectional form and is provided 0 with an elongated slot or opening which extends longitudinally thereof.- .In this slot or opening is'positioned the-means which controls the discharge of fuel from the fuel chamber and this preferably comprises a 7 unitary structure which is capable of bodily replacement, and-removal with relation to the said elongated slot or opening.

The tubular member heretofore referred to is designated by the reference numeral 8 15, the elongated'slot or opening being designated by'the reference numeral 17 and as stated, extends longitudinally of the burner. .The fuel is suppliedto the burner by means of a pipe 7 which is connected with a main supply 8. This main supply 8 is in turn connected with a suitable air and gas mixing device 10 to which air may be supplied by means of a conduit 10, the gas bemg supplied by means of a suitable conduit .11 as indicated in Figure 1. A, suitable controlling means in the form of a valve may be employed to regulate'the volume of fuel supplied to the pipe? from the fuel main 8.

" This pipe 7 has communication with a tubular member 16 forming a chamber 20 preferably semi-circular in cross-sectional shape, which tubular member 16. is positioned within the-tubular member 15 here- 00 tofore mentioned, thus forming a chamber 21 as shown in Fi re 2, and one of the walls, preferably t eupper wall, of this tubular member 16 is provided with a plurality of perforations 22 preferably arranged in staggered relation, through which designated by the reference numeral 25 in the drawings and interposed therebetween is material forming with the walls a series of gas passages through each of which the gas travels'a distance considerably greater than the transverse dimension of the passage. In the present embodiment of my invention,- shown in the drawings merely as-one illustrative form,--this gas passage forming interposed material is a transversely corrugated plate or strip 26. This transversely corrugated strip 26 is of substantially the same length and width as the plates 25 but may be relatively thinner than said plates, as shown. The transversely corrugated strip 26 maintains the plates 25 inspaced relation and divides the space between said plates into a plurality of passages 28 which extend radially of the burner when the several parts thereof are assembled.

For the purpose of making a unitary structure of the plates 25 and the corrugated strip or plate 26 suitable fastening means are employed which, in the present instance, are in the form of rivets 27 which extend through the plates 25 and the corrugated strip or plate 26 at a. point removed from the side edges thereof, as illustrated in Figure 4. In order to prevent a flattening of the corrugated strip under the pressure or force exerted by the fastening means or rivets 27 elements such as the washers 31 are positioned between one of the plates 25 and the corrugated strip and are held in such position by the rivets or fastening means 27. These blocks or washers limit the movement of the plates 25 in a direction toward each other and consequently determine the minimum size of the passages 28 by preventing a flattening of the corrugated strip 26 when the device is assembled.

The unitary structure thus formed is positioned in "the elongated. slot or o ening of the burner and is retained therein y a suitable means such, for example, as the end plates 29 which overlie the endsof the plates 25 and 26 respectively and which are secured to the burner by suitable fastening.

means, such as indicated at 30. These end plates 29 are so formed as to fit tightly the tubular member 15 and prevent any escape by the reference character,- 40 which .en ago one of the plates 25 may be employed. .T ese plates 40 are secured tothe burner by suitable fastening means 41, as shown in Fig ure 3.

As indicated by dotted lines inFigure 3, thestrips on plates 25 v and 26 are slightly shorter than the elongated slot or opening 17 in the burner, which construction allows for the free expansion and contraction under the influences of the heat of the burner without injury to any of the elements of the burner. 1

While I have described a preferred embodiment of my invention, the invention may be embodied in widely different forms other than shown and I therefore do not limit myself to the particular construction illustrated'and described herein.

What is claimed as new is:

1. A burner comprising a tubular member having a slot therein, and a channeled structure mountedin said slot and dividing it into a plurality of individual fuel passages, said channeled structure comprising a plurality of relatively long plates" of greater width than thickness, a transversely corrugated strip interposed between said plates, and means for securing said plates together.

2. A burner com rising a tubular member having a slot therein, and a channeled structure mounted in said slot and dividing it into a plurality'of individual fuel passages, said channeled structure comprising a plurality of plates, a transversely corrugated strip interposed between said plates, means for maintaining said plates indefinite spaced relation, and means for securing the elements of 4. A burner comprising a tubular member having a slot therein, and a channeled structure mounted in said slot and dividing it into a plurality of individual fuel passages, said channeled structure comprising a plurality of plates, a transversely corrugated strip interposed between said plates, means for securing the elements of said channeled structure rigidly together, and spacing blocks in terposed between one of said plates and the corrugated strip for maintaining the plates and strip in definite spaced relation and preventing distortion of the strip. 5. A burner comprising a tubular member having a slot therein, and a channeled structure mounted in said slot and dividing it into a plurality of individual fuel passages, said channeled. structure comprising a plurality of relatively long plates of greater width than thickness, a transversely corru- A gated strip of a width substantially the same as that of the plates and interposed therebetween and means for securing said plates together. '4 i 6. A burner comprising a tubular member having a slot therein, and a channeled structure mounted in said slot and dividing it into a plurality of individual fuel passages, said channeled structure comprising a plurality of relatively long plates of greater width than thickness, a transverselv corrugated strip interposed between said plates, means for securing said plates together, and means carried bythe tubular member and overlying the channeled structure for retaining said channeled structure in said slot.

7. A gas burner comprising a gas conduit having a slot therein, walls extending through V the slot and into-the conduit but independent thereof. said walls extending longitudinally of the slot and being spaced apart less than their width,.and means between said walls forming therewith a series of gas passages through which the issuing gas travels a distance greater than that between said walls.

8. A gas burner comprising a gas conduit having a slot therein, walls extendmg through the lot and into the conduit but independent thereof, said walls extending longitudinally of the slot and also outside of the conduit, and

being spaced apart less than their width, andmeans between said walls forming a series of gas passages through which the issuing gas travels a distance greater than that between said walls.

9. A gas burner comprising a gas conduit having a slot therein, a gas passage unit mounted in said slot and comprising walls extending longitudinally thereof and spaced apart a distance less than their width, means between said walls forming a series of restricted gas passages along said slot, said gas passage unit being bodily placeable in and removable from the slot.

Signed at Saginaw, Michigan, this 26th day ofJanuary, 1928.

- RICHARD THURM 

